ASTM A733-03(2009)e1
(Specification)Standard Specification for Welded and Seamless Carbon Steel and Austenitic Stainless Steel Pipe Nipples
Standard Specification for Welded and Seamless Carbon Steel and Austenitic Stainless Steel Pipe Nipples
ABSTRACT
This specification covers welded and seamless carbon steel and austenitic stainless steel pipe nipples. The mechanical requirements stated that, pipe nipples shall be made from new, hydrostatic tested or NDE-tested pipe, pipe and nipples shall be threaded on both ends with NPT taper pipe threads. The standard and special lengths and sizes of nipples are presented. Galvanized nipples ordered under this specification shall be made from pipe coated on the inside and outside by the hot dip process. Samples of nipples sufficient to determine their conformance with the requirements of this specification shall be taken at random for each lot of nipples of the same pipe size, length, and material, also, samples shall be inspected to determine their conformance with the dimensional requirements, including thread dimensions.
SCOPE
1.1 This specification covers the requirements for welded and seamless carbon steel pipe nipples, black and zinc-coated (hot-dip galvanized), and welded and seamless austenitic stainless steel pipe nipples in standard steel pipe sizes from 1/8to 12 in. inclusive, in standard or special lengths.
1.1.1 Welded Carbon Steel—Pipe nipples ordered under these requirements are intended for general uses, as described by Specification A 53/A 53M.
1.1.2 Seamless Carbon Steel—Pipe nipples ordered under these requirements are intended for general and special uses, as described by the applicable Specifications A 53/A 53M and A 106/A 106M ( see 4.1.1).
1.1.3 Austenitic Stainless Steel—Pipe nipples ordered under these requirements are intended for high-temperature and general corrosion service, as described by Specification A 312/A 312M (see 4.1.2).
1.1.4 The text for this specification contains notes and/or footnotes that provide explanatory material. Such notes and footnotes, excluding those in tables, do not contain any mandatory language.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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´1
Designation:A733 −03(Reapproved 2009)
Standard Specification for
Welded and Seamless Carbon Steel and Austenitic Stainless
Steel Pipe Nipples
This standard is issued under the fixed designation A733; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
´ NOTE—A units statement was added editorially as new paragraph 1.2 in April 2009.
1. Scope Dipped, Zinc-Coated, Welded and Seamless
A106/A106M Specification for Seamless Carbon Steel Pipe
1.1 This specification covers the requirements for welded
for High-Temperature Service
and seamless carbon steel pipe nipples, black and zinc-coated
A312/A312M Specification for Seamless, Welded, and
(hot-dip galvanized), and welded and seamless austenitic
1 Heavily Cold Worked Austenitic Stainless Steel Pipes
stainless steel pipe nipples in standard steel pipe sizes from ⁄8
to 12 in. inclusive, in standard or special lengths.
2.2 American National Standards Institute Standards:
1.1.1 Welded Carbon Steel—Pipe nipples ordered under
B1.20.1 Pipe Threads, General Purpose
these requirements are intended for general uses, as described
B36.10 Standard for Welded and Seamless Wrought Steel
by Specification A53/A53M.
Pipe
1.1.2 Seamless Carbon Steel—Pipe nipples ordered under
B36.19 Standard for Stainless Steel Pipe
theserequirementsareintendedforgeneralandspecialuses,as
described by the applicable Specifications A53/A53M and
3. Ordering Information
A106/A106M ( see 4.1.1).
3.1 Information items to be considered, if appropriate, for
1.1.3 Austenitic Stainless Steel—Pipe nipples ordered under
inclusion in purchase orders are as follows:
these requirements are intended for high-temperature and
general corrosion service, as described by Specification A312/ 3.1.1 Quantity (pieces),
A312M (see 4.1.2).
3.1.2 Name of material (carbon steel or austenitic stainless
1.1.4 The text for this specification contains notes and/or
steel pipe nipples) (see 4.1.1 and 4.1.2),
footnotes that provide explanatory material. Such notes and
3.1.3 Method of pipe manufacture (continuous-welded,
footnotes, excluding those in tables, do not contain any
electric-resistance welded, or seamless). (see 4.1.1, Note 1),
mandatory language.
3.1.4 Type and grade (if stainless steel),
1.2 The values stated in inch-pound units are to be regarded
3.1.5 Finish (carbon steel, black or galvanized),
as standard. The values given in parentheses are mathematical
3.1.6 Size (nominal and weight class or schedule number as
conversions to SI units that are provided for information only
shown in Table 1, or outside diameter and nominal wall),
and are not considered standard.
3.1.7 Length (standard or special, see 4.3),
2. Referenced Documents
3.1.8 Specification number,
2.1 ASTM Standards: 3.1.9 Certification of compliance, if required, and
A53/A53M Specification for Pipe, Steel, Black and Hot-
3.1.10 Special requirements or exceptions to this specifica-
tion.
1 3.2 In addition, when material is purchased for agencies of
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
the U.S. Government, it shall conform to the Supplementary
A01.09 on Carbon Steel Tubular Products.
Requirements as defined herein when specified in the contract
Current edition approved April 1, 2009. Published September 2009. Originally
or purchase order.
approved in 1976. Last previous edition approved in 2003 as A733 – 03. DOI:
10.1520/A0733-03R09E01.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´1
A733−03 (2009)
TABLE 1 Pipe Nipple Sizes According to Weight of Nominal Pipe
Method of Pipe Manufacture Specification
AB
Sizes
Welded (Note 1) A53
Seamless (Note 2) A53
NPS Designator
A106
1 1 3 1
Weight
⁄8 ⁄4 ⁄8 ⁄2 to 6 8 10 12
NOTE 1—Unless otherwise specified, continuous–welded nipples are
C
furnished in sizes NPS 4 and under for standard and extra strong pipe, and
Standard (Schedule 40) XXXXXX
DC 1
NPS2 ⁄2andunderforSchedule160anddoubleextrastrongpipe.Welded
Extra strong (Schedule XXXXX
80)
nipples in sizes larger than that indicated for continuous–welded are
Schedule 160 . . . XXXX
electric resistance welded.
Double extra strong . . . XXXX
4.1.2 Austenitic Stainless Steel—Austenitic stainless steel
A
Acomprehensive listing of standardized pipe dimensions is contained inANSI
pipe nipples shall be in accordance with Specification A312/
B36.10 and B36.19.
B
Continuous-welded pipe is not made in sizes larger than NPS 4 (standard and A312M.
extra strong) and larger than NPS 2 ⁄2 (Schedule 160 and double extra strong).
C 4.2 Threads—Pipe nipples shall be threaded on both ends
NPS 12 standard and extra strong weight pipe do not have designated
schedule numbers. with NPTtaper pipe threads conforming to the requirements of
D
NPS 10 extra strong pipe is Schedule 60, not Schedule 80.
ANSI B 1.20.1, except for “close” nipples where L4 andVare
shorter, due to fewer imperfect threads. It is standard manu-
facturing practice on all other nipple lengths to vary L4 plus or
minus two threads. All other dimensions, tolerances, and
4. Requirements
gagingpracticesremainthesameasANSIB1.20.1,plus5.3of
this specification.
4.1 Material and Weight—Pipe nipples covered by this
4.2.1 Threadsshallberight-handonbothends,exceptwhen
specification shall be made from new, hydrostatic-tested or
otherwise specified.
NDE-tested pipe conforming to the requirements specified in
4.1.1 and 4.1.2. 4.3 Lengths:
4.1.1 Carbon Steel—Carbon steel pipe nipples shall be in 4.3.1 The standard lengths and sizes of nipples generally
accordance with the following: available are shown in Table 2.The availability of such nipples
TABLE 2 Pipe Nipples by Length and Nominal Pipe Size
Type of Nipple NPS Designator
1 1 3 1 3 1 1 1 1
⁄8 ⁄4 ⁄8 ⁄2 ⁄4 11 ⁄4 1 ⁄2 22 ⁄2 33 ⁄2 4568 10 12
AB
Pipe Nipple Lengths, in.
3 7 1 3 1 5 3 1 5 3 7 1 1 7 1
Close (cl) ⁄4 ⁄8 11 ⁄8 1 ⁄8 1 ⁄2 1 ⁄8 1 ⁄4 22 ⁄2 2 ⁄8 2 ⁄4 2 ⁄8 33 ⁄8 3 ⁄2 3 ⁄8 4 ⁄2
1 1 1 1 1
1 ⁄2 1 ⁄2 1 ⁄2 1 ⁄2 1 ⁄2
1 1 1 1 1 1 1 1 1
2 ⁄2 2 ⁄2 2 ⁄2 2 ⁄2 2 ⁄2 2 ⁄2 2 ⁄2 2 ⁄2 2 ⁄2
33333333 333
1 1 1 1 1 1 1 1 1 1
3 ⁄2 3 ⁄2 3 ⁄2 3 ⁄2 3 ⁄2 3 ⁄2 3 ⁄233 ⁄2 3 ⁄2 3 ⁄2
44444444 44444
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
4 ⁄2 4 ⁄2 4 ⁄2 4 ⁄2 4 ⁄2 4 ⁄2 4 ⁄2 4 ⁄2 4 ⁄2 4 ⁄2 4 ⁄2 4 ⁄2 4 ⁄2 4 ⁄2 4 ⁄2
55555555 555555555
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2 5 ⁄2
66666666 6666666666
77777777 7777777777
88888888 8888888888
99999999 9999999999
10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11
12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12
13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13
14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14
15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15
16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17
18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18
19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19
20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
21 21 21 21
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
An American National Standard Designation: A 733 – 03 (Reapproved 2009)
Designation:A733–01
Standard Specification for
Welded and Seamless Carbon Steel and Austenitic Stainless
Steel Pipe Nipples
This standard is issued under the fixed designation A 733; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
´ NOTE—A units statement was added editorially as new paragraph 1.2 in April 2009.
1. Scope
1.1 Thisspecificationcoverstherequirementsforweldedandseamlesscarbonsteelpipenipples,blackandzinc-coated(hot-dip
galvanized), and welded and seamless austenitic stainless steel pipe nipples in standard steel pipe sizes from ⁄8 to 12 in. inclusive,
in standard or special lengths.
1.1.1 Welded Carbon Steel—Pipe nipples ordered under these requirements are intended for general uses, as described by
Specification A 53/A 53M.
1.1.2 Seamless Carbon Steel—Pipe nipples ordered under these requirements are intended for general and special uses, as
described by the applicable Specifications A53 and A106A 53/A 53M and A 106/A 106M ( see 4.1.1).
1.1.3 Austenitic Stainless Steel—Pipe nipples ordered under these requirements are intended for high-temperature and general
corrosion service, as described by Specification A 312/A 312M (see 4.1.2).
1.1.4 The text for this specification contains notes and/or footnotes that provide explanatory material. Such notes and footnotes,
excluding those in tables, do not contain any mandatory language.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
2. Referenced Documents
2.1 ASTM Standards:
A 53/A 53M Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
A 106/A 106M Specification for Seamless Carbon Steel Pipe for High-Temperature Service
A312SpecificationforSeamlessandWeldedAusteniticStainlessSteelPipes 312/A 312M SpecificationforSeamless,Welded,
and Heavily Cold Worked Austenitic Stainless Steel Pipes
2.2 American National Standards Institute Standards:
B1.20.1 Pipe Threads, General Purpose
B36.10 Standard for Welded and Seamless Wrought Steel Pipe
B36.19 Standard for Stainless Steel Pipe
3. Ordering Information
3.1 Information items to be considered, if appropriate, for inclusion in purchase orders are as follows:
3.1.1 Quantity (pieces),
3.1.2 Name of material (carbon steel or austenitic stainless steel pipe nipples) (see 4.1.1 and 4.1.2),
3.1.3 Method of pipe manufacture (continuous-welded, electric-resistance welded, or seamless). (see 4.1.1, Note 1),
3.1.4 Type and grade (if stainless steel),
3.1.5 Finish (carbon steel, black or galvanized),
3.1.6 Size (nominal and weight class or schedule number as shown in Table 1, or outside diameter and nominal wall),
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys,Alloys and is the direct responsibility of Subcommittee
A01.09 on Carbon Steel Tubular Products.
Current edition approved Sept. 10, 2001. Published December 2001. Originally published as A733–76. Last previous edition A733–99.
Current edition approved April 1, 2009. Published September 2009. Originally approved in 1976. Last previous edition approved in 2003 as A 733 – 03.
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
, Vol 01.01.volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from American National Standards Institute, 11 West 42nd St., 13th Floor, New York, NY 10036.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
´1
A 733 – 03 (2009)
TABLE 1 Pipe Nipple Sizes According to Weight of Nominal
AB
Pipe Sizes
NPS Designator
Weight
1 1 3 1
⁄8 ⁄4 ⁄8 ⁄2 to 6 8 10 12
C
Standard (Schedule 40) XXXXXX
DC
Extra strong (Schedule XXXXX
80)
Schedule 160 . . . XXXX
Double extra strong . . . XXXX
A
A comprehensive listing of standardized pipe dimensions is contained in ANSI
B36.10 and B36.19.
B
Continuous-welded pipe is not made in sizes larger than NPS 4 (standard and
extra strong) and larger than NPS 2 ⁄2 (Schedule 160 and double extra strong).
C
NPS 12 standard and extra strong weight pipe do not have designated
schedule numbers.
D
NPS 10 extra strong pipe is Schedule 60, not Schedule 80.
3.1.7 Length (standard or special, see 4.3),
3.1.8 Specification number,
3.1.9 Certification of compliance, if required, and
3.1.10 Special requirements or exceptions to this specification.
3.2 In addition, when material is purchased for agencies of the U.S. Government, it shall conform to the Supplementary
Requirements as defined herein when specified in the contract or purchase order.
4. Requirements
4.1 Material and Weight—Pipe nipples covered by this specification shall be made from new, pressure-testedhydrostatic-tested
or NDE-tested pipe conforming to the requirements specified in 4.1.1 and 4.1.2.
4.1.1 Carbon Steel—Carbon steel pipe nipples shall be in accordance with the following:
Method of Pipe Manufacture Specification
Welded (Note 1) A53
Seamless (Note 2) A53
A 106
NOTE 1—Unless otherwise specified, continuous–welded nipples are furnished in sizes NPS 4 and under for standard and extra strong pipe, and NPS
2 ⁄2 and under for Schedule 160 and double extra strong pipe. Welded nipples in sizes larger than that indicated for continuous–welded are electric
resistance welded.
4.1.2 AusteniticStainlessSteel—AusteniticstainlesssteelpipenipplesshallbeinaccordancewithSpecificationA 312/A 312M.
4.2 Threads—Pipe nipples shall be threaded on both ends with NPTtaper pipe threads conforming to the requirements ofANSI
B 1.20.1, except for “close” nipples where L 4 and V are shorter, due to fewer imperfect threads. It is standard manufacturing
practice on all other nipple lengths to vary L 4 plus or minus two threads. All other dimensions, tolerances, and gaging practices
remain the same as ANSI B 1.20.1, plus 5.3 of this specification.
4.2.1 Threads shall be right-hand on both ends, except when otherwise specified.
4.3 Lengths:
4.3.1 The standard lengths and sizes of nipples generally available are shown in Table 2. The availability of such nipples
according to pipe size and weight is shown in Table 1.
4.3.2 Special lengths and sizes of nipples may be specified when required. Standard and special lengths shall conform to the
tolerance requirements of 4.3.3.
4.3.3 Nipples with lengths up through 12 in. (304.8 mm) long shall have a length tolerance of 6 ⁄16 in. (1.6 mm). Nipples over
12 in. long shall have a tolerance of 6 ⁄8 in. (3.2 mm).
4.4 End Finish—The ends of the pipe nipples shall be chamfered on the outside at an angle of 35 6 10 ° to the central axis.
(It is the standard practice that the ⁄8-in. (3.2-mm) nominal pipe size nipples are not chamfered.) Ends shall be cut reasonably
square to the central axis. All burrs on the inside shall be removed.
4.5 Galvanized Nipples—Galvanized nipples ordered under this specification shall be made from pipe coated on the inside and
outside by the hot-dip process. Threads and nipple ends are not galvanized.
5. Sampling and Inspection
5.1 Sampling—Samples of nipples sufficient to determine their conformance with the requirements of this specificatio
...
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